package com.ysx.teacher.day20210922.ch10;

import com.ysx.teacher.day20210922.ch09.Ch09;

public class Ch09Test {
    public static void main(String[] args) {
        Ch09 ch09= new Ch09();
        // 此处的代码用来验证 protected 和什么都没有
        // public private ...
        //System.out.println(ch09.add(10,20));;
    }

}
